Search found 379 matches

by Dougflas
Sun Sep 19, 2021 4:19 am
Forum: Automotive Air Conditioning Forum
Topic: POA Valve Honking/Pulsing
Replies: 7
Views: 4065

Re: POA Valve Honking/Pulsing

1/4 turn counter clockwise from R12. POA should not pulsate. your looks bad.
by Dougflas
Sun Sep 19, 2021 4:15 am
Forum: Automotive Air Conditioning Forum
Topic: My turn, need the wizards
Replies: 33
Views: 14214

Re: My turn, need the wizards

Is there air flow coming out of the vents? Is the evap freezing up? Put a monentary switch in the clutch circuit and manually cycle the clutch. Will the vent temps return to normal? Evap could be plugged.
by Dougflas
Sat Sep 11, 2021 4:57 am
Forum: Automotive Air Conditioning Forum
Topic: AC warms at higher speeds
Replies: 4
Views: 3124

Re: AC warms at higher speeds

I agree it may be low on charge. The most common problem is proper charging and it is the easiest to check. Once the charge is verified, then on to other causes.
by Dougflas
Sat Sep 11, 2021 4:53 am
Forum: Automotive Air Conditioning Forum
Topic: For Dougflas
Replies: 4
Views: 2919

Re: For Dougflas

Never tried them
by Dougflas
Thu Aug 19, 2021 8:25 pm
Forum: Automotive Air Conditioning Forum
Topic: 1988 Chevy Suburban r12-r134a retrofit problems
Replies: 21
Views: 27201

Re: 1988 Chevy Suburban r12-r134a retrofit problems

I do not use Four Seasons anything. Their compressors did not hold up and that was enough for me. I do not even try their evaps or condensers. Did this vehicle at one time have a dual evap system?
by Dougflas
Tue Aug 17, 2021 2:20 pm
Forum: Automotive Air Conditioning Forum
Topic: 2013 Ford Raptor not co.d enough
Replies: 15
Views: 20416

Re: 2013 Ford Raptor not co.d enough

older Fords are know to have defective cycling switches
by Dougflas
Wed Jul 28, 2021 4:47 am
Forum: Automotive Air Conditioning Forum
Topic: How cool should be vehicle ac be running?
Replies: 12
Views: 6655

Re: How cool should be vehicle ac be running?

Depends. How hot was inside vehicle when first started? How long before you checked temps at vents after vehicle started? Was vehicle in the sun before vehicle started? What is the blower speed? Was vehicle moving when temps were taken? Was vehicle at normal operating temp when temps were taken? Rpm...
by Dougflas
Thu Jul 22, 2021 4:32 am
Forum: Automotive Air Conditioning Forum
Topic: POA update r12 should I remove the Thermostatic cycling switch?
Replies: 9
Views: 5840

Re: POA update r12 should I remove the Thermostatic cycling switch?

Photos would help answer your question. Is the updated POA an eliminator type
by Dougflas
Tue Jul 20, 2021 5:23 am
Forum: Automotive Air Conditioning Forum
Topic: POA Valve Test/Adjust
Replies: 19
Views: 10143

Re: POA Valve Test/Adjust

Make sure your low side gauge is zeroed out before you adjust the valve.
by Dougflas
Sun Jul 04, 2021 4:09 pm
Forum: Automotive Air Conditioning Forum
Topic: AC not very cold at idle, great while driving
Replies: 61
Views: 27879

Re: AC not very cold at idle, great while driving

Do not use superheat or subcooling in MVAC. The compressor speed changes and superheat will also change. Throw those readings out the door. These readings are used in stationary refrigeration because the compressor speed is constant. Get a new belt on there and check the idler and pulleys. Also, dis...